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J. B. CROFOOT CUSHION CAP FOR TOOLS- May 27, 1930.

Original Filed March 16. 1928 Reissued May 27, 1930 'UNITED STATES PATENT OFFICE CUSHION CAP FOR TOOLS Original No. 1,713,820, date& May 21, 1929, Serial No. 262,255, filed March 16, 1928.

ressue filed March 31, 1930. Serial No. 440,564

The present invention is directed to improvements in cushion caps for percussion operatecl tools such as stapling machines and the like, and has for its general object the provision of a device of the kind described that Will be eilicient in operation, of comparatively low manufacturing cost and particularly adapted to save the hand of the operator from pain or discomfort when operating the device.

Another object of my invention is to provide a cushion cap for stapling machines with means permitting its almost continuous use without injury to the comparatively soft hands of those engaged in office work.

Other objects and advantages of my invention will appear more fully hereinafter when taken in connection with the accompanying drawings, in which:

Figure 1 is a side elevation of my device as applied to a conventional stapling machine.

Figure 2 is a plan view thereof.

Figure 3 is a sectional View taken on line 3--3 of Figure l looking in the direction of the arrows.

Referring more particularly to the drawings in which similar characters of reference designate corresponding parts in the several views, A designates a stapling machine having an Operating head 6 to which is applied the cushion cap B embodying my invention. The cap B comprising my structure is formed of soft, pliable rubber molded to provide an upper cup shaped recess 7, formed by the circumferent-ial wall 7' having an overlapping flange or lip 8 adaptedto aid in securing the rubber sponge 9. Formed unitary with the cap and on the bottom thereof is a comparatively shallow cup shaped recess 10, the walls 11 of which are likewise adapted to overlap and secure the Operating head 6 which latter forms a part of the plunger hammer 12, this element being square in configuration to register with and be slidably received by a square groove 13 in an end 'wall 14 of the sta ling machine A.

s best shown in Figure 3, it will be seen that the Operating handle 6 is resiliently maintained in raised position to be operated Application !or by the action of' coil spring 15, which latter is seated in a recess 16 Of& collar 17 having a bottom hole 18 accommodating the square shank 12. It will be understood, that the details of the stapling machine in themselves form nopart of my invention, but are merely set forth with a view to a more clear eXplanation of the functions and mode of; operation of my cushion cap B. V a

, The operation of stapling machines is, of course, well known, it being understood that a supply of staples issequentially fed to the plunger hammer12 as the latter applies them individually; to the various papers and documents to be attached or stapled together.

When stapling machines are used over protracted intervals of time, it is often found that the hand of the operator ;is rendered painful, by reason of the constant blows delivered, sometimes giving rise to injury of the small bones of the hand. In this respect,

I have found the rubber sponge 9 to form' an admirable cushioning agent in conjunction with the pliable and resilient wall 7' which serves to partially enclose the sponge 9. The properties of the rubber sponge are of course too well known to need description. The softness and pliancy of this product particularly suits it for use as a shock absorbing medium in the capacity above indicated.`

By actual experience, I have found no tendeney towards lameness of the hand of those constantly engaged in manipulation of stapling machines when my cushion cap has been applied to the heads of these devices.

It will be understood, of course, that minor changes of Construction and relative disposition of parts may be made without departing from the spirit or scope of my invention as illustrated in the drawings and set forth in the specification; hence, I do not confine myself literally to the exact details as described, but wish to avail myself of such variations and modifications as fairly lie within the province of the appended claims.

What I claim as new and desire to secure by Letters Patent is:

1. A rubber cushion cap com rising a unitary pliable structure having a ottom socket adapted to clampingly receive the head of a IOU staplin machine, a top socket, a resilient Shock a sorbing porous element in said top socket, and a flange on the wall of said top socket whereby said porous element sremov- 5 ably Secured thereto.

i 2. Aeshon eapeomprising a unitary r ubber structure having a bottom stocket ormedby a downwardly and-'inwardly projecting circumferential wall, a top socket for'med by 10 an upper and inwardly ;projetig circumferentiahwall, said bottom socket 'arranged to clampingly receive the Operating head 'of a stapling machne, and a rubbesponge renova bly 'sc'ured nsaiiwp soektl 15 3.' A cushion c'ap comprising a unitary pliblestructure having a bottom soket adapted to' clampingly receive the head of astapling i machine, a topfs ocket formed insa-idushion Gap, a 'es lient'shook abso'floing porous elei n ment' disposed in said top socket, and means for retainng seid porous element nsad "top s h k t- 3 i 4; 'Anshion eep eomprsing e nnitary pliable structure provided with means for engagng the Operating head of a' stapling `mam-- i `chi'ne, said structure provided with an upper soc'ket oppositely diposed to the stapling machine head engagng portion Shock absorbing elementofgfeater resliency and'pli- ;o ability than said'structu-e disposed in said upper sooket, and means for retaii'ixig said .element within said s'ocket.` i 'j 'I'n testimony whereof I have signed my name to this specifieaton.

O N B- CRQFOQT 

